CGAL users discussion list

[Ramin H <>]

Laurent,
Thank you for the elaboration.
-Ramin

On Fri, Dec 4, 2009 at 9:34 AM, Laurent Rineau (GeometryFactory)
<>
 wrote:
> On Friday 04 December 2009 15:21:42 Ramin H wrote:
>> Thank you very much. I added  LIBS += -lCGAL -lCGAL_Core to the end of
>> .pro file and that solved the problem.
>>
>> I thought LIBS  += -L"/home/ramin/CGAL-3.5/lib" would be enough and
>> linker will find what it needs in that folder. Does LIBS += -lCGAL
>> -lCGAL_Core tell linker to use specific libraries in that folder?
>
> -lCGAL tells the linker to find out a file named libCGAL.so and link with 
> it.
> The -L flags that are given *before* modify the list of directories to 
> search
> in. In your case, you added /usr/lib before -L$HOME/CGAL-3.5/lib/. If you 
> had
> a file /usr/lib/libCGAL.so (for example from a package libcgal3-dev of
> Ubuntu), that one would be used instead of the one from the CGAL-3.5 you 
> have
> installed in your home directory.
>
>> Also, it compiled without the -frounding-math flag.
>
> Well, it does compile without -frounding-math, but, if you compile with
> compiler optimization (which is very recommended with CGAL), your compiler 
> may
> use optimization about floating point arithmetic that create bugs in CGAL
> numeric algorithms.
>
> You should put the following in your pro file, near its beginning:
>
> QMAKE_CXXFLAGS += -frounding-math
>
> --
> Laurent Rineau, PhD
> R&D Engineer at GeometryFactory           http://www.geometryfactory.com/
> Release Manager of the CGAL Project       http://www.cgal.org/
>
> --
> You are currently subscribed to cgal-discuss.
> To unsubscribe or access the archives, go to
> https://lists-sop.inria.fr/wws/info/cgal-discuss
>
>